d3372da9 |
1 | /* |
2 | * Dolda Connect - Modular multiuser Direct Connect-style client |
3 | * Copyright (C) 2004 Fredrik Tolf (fredrik@dolda2000.com) |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify |
6 | * it under the terms of the GNU General Public License as published by |
7 | * the Free Software Foundation; either version 2 of the License, or |
8 | * (at your option) any later version. |
9 | * |
10 | * This program is distributed in the hope that it will be useful, |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 | * GNU General Public License for more details. |
14 | * |
15 | * You should have received a copy of the GNU General Public License |
16 | * along with this program; if not, write to the Free Software |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
18 | */ |
19 | |
20 | /* |
21 | * Note: This code is still ugly, since I copied it almost verbatim |
22 | * from the daemon's parser. It would need serious cleanups, but at |
23 | * least it works for now. |
24 | */ |
25 | |
26 | #ifdef HAVE_CONFIG_H |
27 | #include <config.h> |
28 | #endif |
29 | #include <stdio.h> |
30 | #include <unistd.h> |
31 | #include <stdlib.h> |
32 | #include <string.h> |
33 | #include <iconv.h> |
34 | #include <wchar.h> |
35 | #include <wctype.h> |
36 | #include <errno.h> |
37 | #include <stdarg.h> |
38 | #include <sys/socket.h> |
39 | #include <netinet/in.h> |
40 | #include <arpa/inet.h> |
12383d48 |
41 | #include <sys/un.h> |
d3372da9 |
42 | #include <fcntl.h> |
43 | #include <netdb.h> |
44 | #include <sys/poll.h> |
12383d48 |
45 | #include <pwd.h> |
d3372da9 |
46 | #ifdef HAVE_RESOLVER |
47 | #include <arpa/nameser.h> |
48 | #include <resolv.h> |
49 | #endif |
50 | |
51 | #include <doldaconnect/uilib.h> |
31c700d1 |
52 | #include <utils.h> |
d3372da9 |
53 | |
4d487bad |
54 | #define DOLCON_SRV_NAME "_dolcon._tcp" |
55 | |
d3372da9 |
56 | #define RESP_END -1 |
57 | #define RESP_DSC 0 |
58 | #define RESP_STR 1 |
59 | #define RESP_INT 2 |
60 | #define RESP_FLOAT 3 |
61 | |
62 | struct respclass |
63 | { |
64 | struct respclass *next; |
65 | int code; |
66 | int nwords; |
67 | int *wordt; |
68 | }; |
69 | |
70 | struct command |
71 | { |
72 | struct command *next; |
73 | wchar_t *name; |
74 | struct respclass *classes; |
75 | }; |
76 | |
77 | struct qcmd |
78 | { |
79 | struct qcmd *next; |
80 | struct command *cmd; |
81 | int tag; |
82 | char *buf; |
83 | size_t buflen; |
84 | int (*callback)(struct dc_response *resp); |
85 | void *data; |
86 | }; |
87 | |
88 | void dc_uimisc_disconnected(void); |
89 | |
90 | /* The first command must be the nameless connect command and second |
91 | * the notification command. */ |
92 | static struct command *commands = NULL; |
93 | static struct qcmd *queue = NULL, *queueend = NULL; |
94 | static struct dc_response *respqueue = NULL, *respqueueend = NULL; |
95 | static int state = -1; |
96 | static int fd = -1; |
97 | static iconv_t ichandle; |
98 | static int resetreader = 1; |
d3372da9 |
99 | static struct addrinfo *hostlist = NULL, *curhost = NULL; |
9e5f2b29 |
100 | struct { |
101 | char *hostname; |
102 | int family; |
103 | int sentcreds; |
104 | } servinfo; |
e4b88cc0 |
105 | char *dc_srv_local; |
d3372da9 |
106 | |
107 | static struct dc_response *makeresp(void) |
108 | { |
109 | struct dc_response *new; |
110 | |
111 | new = smalloc(sizeof(*new)); |
112 | new->next = NULL; |
113 | new->prev = NULL; |
114 | new->code = 0; |
115 | new->cmdname = NULL; |
116 | new->rlines = NULL; |
117 | new->linessize = 0; |
118 | new->numlines = 0; |
119 | new->curline = 0; |
120 | new->data = NULL; |
121 | return(new); |
122 | } |
123 | |
124 | static void freeqcmd(struct qcmd *qcmd) |
125 | { |
126 | if(qcmd->buf != NULL) |
127 | free(qcmd->buf); |
128 | free(qcmd); |
129 | } |
130 | |
131 | static void unlinkqueue(void) |
132 | { |
133 | struct qcmd *qcmd; |
134 | |
135 | if((qcmd = queue) == NULL) |
136 | return; |
137 | queue = qcmd->next; |
138 | if(queue == NULL) |
139 | queueend = NULL; |
140 | freeqcmd(qcmd); |
141 | } |
142 | |
143 | static struct qcmd *makeqcmd(wchar_t *name) |
144 | { |
145 | struct qcmd *new; |
146 | struct command *cmd; |
147 | static int tag = 0; |
148 | |
149 | if(name == NULL) |
150 | { |
151 | cmd = commands; |
152 | } else { |
153 | for(cmd = commands; cmd != NULL; cmd = cmd->next) |
154 | { |
155 | if((cmd->name != NULL) && !wcscmp(cmd->name, name)) |
156 | break; |
157 | } |
158 | if(cmd == NULL) |
159 | return(NULL); |
160 | } |
161 | new = smalloc(sizeof(*new)); |
162 | new->tag = tag++; |
163 | new->cmd = cmd; |
164 | new->buf = NULL; |
165 | new->buflen = 0; |
166 | new->callback = NULL; |
167 | new->next = NULL; |
168 | new->data = NULL; |
169 | if(queueend == NULL) |
170 | { |
171 | queue = queueend = new; |
172 | } else { |
173 | queueend->next = new; |
174 | queueend = new; |
175 | } |
176 | return(new); |
177 | } |
178 | |
179 | static wchar_t *quoteword(wchar_t *word) |
180 | { |
181 | wchar_t *wp, *buf, *bp; |
182 | int dq, numbs, numc; |
183 | |
184 | dq = 0; |
185 | numbs = 0; |
186 | numc = 0; |
187 | if(*word == L'\0') |
188 | { |
189 | dq = 1; |
190 | } else { |
191 | for(wp = word; *wp != L'\0'; wp++) |
192 | { |
193 | if(!dq && iswspace(*wp)) |
194 | dq = 1; |
195 | if((*wp == L'\\') || (*wp == L'\"')) |
196 | numbs++; |
197 | numc++; |
198 | } |
199 | } |
200 | if(!dq && !numbs) |
201 | return(NULL); |
202 | bp = buf = smalloc(sizeof(wchar_t) * (numc + numbs + (dq?2:0) + 1)); |
203 | if(dq) |
204 | *(bp++) = L'\"'; |
205 | for(wp = word; *wp != L'\0'; wp++) |
206 | { |
207 | if((*wp == L'\\') || (*wp == L'\"')) |
208 | *(bp++) = L'\\'; |
209 | *(bp++) = *wp; |
210 | } |
211 | if(dq) |
212 | *(bp++) = L'\"'; |
213 | *(bp++) = L'\0'; |
214 | return(buf); |
215 | } |
216 | |
217 | static struct command *makecmd(wchar_t *name) |
218 | { |
219 | struct command *new; |
220 | |
221 | new = smalloc(sizeof(*new)); |
222 | new->name = name; |
223 | new->classes = NULL; |
224 | new->next = commands; |
225 | commands = new; |
226 | return(new); |
227 | } |
228 | |
229 | static struct respclass *addresp(struct command *cmd, int code, ...) |
230 | { |
231 | struct respclass *new; |
232 | int i; |
233 | int resps[128]; |
234 | va_list args; |
235 | |
236 | va_start(args, code); |
237 | i = 0; |
238 | while((resps[i++] = va_arg(args, int)) != RESP_END); |
239 | i--; |
240 | va_end(args); |
241 | new = smalloc(sizeof(*new)); |
242 | new->code = code; |
243 | new->nwords = i; |
244 | if(i > 0) |
245 | { |
246 | new->wordt = smalloc(sizeof(int) * i); |
247 | memcpy(new->wordt, resps, sizeof(int) * i); |
248 | } else { |
249 | new->wordt = NULL; |
250 | } |
251 | new->next = cmd->classes; |
252 | cmd->classes = new; |
253 | return(new); |
254 | } |
255 | |
256 | #include "initcmds.h" |
257 | |
258 | int dc_init(void) |
259 | { |
260 | if((ichandle = iconv_open("wchar_t", "utf-8")) == (iconv_t)-1) |
261 | return(-1); |
e4b88cc0 |
262 | dc_srv_local = sstrdup(""); |
d3372da9 |
263 | initcmds(); |
264 | return(0); |
265 | } |
266 | |
267 | void dc_cleanup(void) |
268 | { |
269 | iconv_close(ichandle); |
270 | } |
271 | |
272 | void dc_disconnect(void) |
273 | { |
274 | struct dc_response *resp; |
275 | |
276 | state = -1; |
277 | if(fd >= 0) |
278 | close(fd); |
279 | fd = -1; |
280 | while(queue != NULL) |
281 | unlinkqueue(); |
282 | while((resp = dc_getresp()) != NULL) |
283 | dc_freeresp(resp); |
284 | dc_uimisc_disconnected(); |
9e5f2b29 |
285 | if(servinfo.hostname != NULL) |
286 | free(servinfo.hostname); |
287 | memset(&servinfo, 0, sizeof(servinfo)); |
d3372da9 |
288 | } |
289 | |
290 | void dc_freeresp(struct dc_response *resp) |
291 | { |
292 | int i, o; |
293 | |
294 | for(i = 0; i < resp->numlines; i++) |
295 | { |
296 | for(o = 0; o < resp->rlines[i].argc; o++) |
297 | free(resp->rlines[i].argv[o]); |
298 | free(resp->rlines[i].argv); |
299 | } |
300 | free(resp->rlines); |
301 | free(resp); |
302 | } |
303 | |
304 | struct dc_response *dc_getresp(void) |
305 | { |
306 | struct dc_response *ret; |
307 | |
308 | if((ret = respqueue) == NULL) |
309 | return(NULL); |
310 | respqueue = ret->next; |
311 | if(respqueue == NULL) |
312 | respqueueend = NULL; |
313 | else |
314 | respqueue->prev = NULL; |
315 | return(ret); |
316 | } |
317 | |
318 | struct dc_response *dc_gettaggedresp(int tag) |
319 | { |
320 | struct dc_response *resp; |
321 | |
322 | for(resp = respqueue; resp != NULL; resp = resp->next) |
323 | { |
324 | if(resp->tag == tag) |
325 | { |
326 | if(resp->prev != NULL) |
327 | resp->prev->next = resp->next; |
328 | if(resp->next != NULL) |
329 | resp->next->prev = resp->prev; |
330 | if(resp == respqueue) |
331 | respqueue = resp->next; |
332 | if(resp == respqueueend) |
333 | respqueueend = resp->prev; |
334 | return(resp); |
335 | } |
336 | } |
337 | return(NULL); |
338 | } |
339 | |
340 | struct dc_response *dc_gettaggedrespsync(int tag) |
341 | { |
342 | struct pollfd pfd; |
343 | struct dc_response *resp; |
344 | |
345 | while((resp = dc_gettaggedresp(tag)) == NULL) |
346 | { |
347 | pfd.fd = fd; |
348 | pfd.events = POLLIN; |
349 | if(dc_wantwrite()) |
350 | pfd.events |= POLLOUT; |
351 | if(poll(&pfd, 1, -1) < 0) |
352 | return(NULL); |
353 | if((pfd.revents & POLLIN) && dc_handleread()) |
354 | return(NULL); |
355 | if((pfd.revents & POLLOUT) && dc_handlewrite()) |
356 | return(NULL); |
357 | } |
358 | return(resp); |
359 | } |
360 | |
361 | int dc_wantwrite(void) |
362 | { |
363 | switch(state) |
364 | { |
365 | case 1: |
366 | if((queue != NULL) && (queue->buflen > 0)) |
367 | return(1); |
368 | break; |
369 | } |
370 | return(0); |
371 | } |
372 | |
373 | int dc_getstate(void) |
374 | { |
375 | return(state); |
376 | } |
377 | |
378 | int dc_queuecmd(int (*callback)(struct dc_response *), void *data, ...) |
379 | { |
380 | struct qcmd *qcmd; |
381 | int num, freepart; |
382 | va_list al; |
ccad23d3 |
383 | char *final, *sarg; |
d3372da9 |
384 | wchar_t **toks; |
385 | wchar_t *buf; |
386 | wchar_t *part, *tpart; |
387 | size_t bufsize, bufdata; |
388 | |
389 | buf = NULL; |
390 | bufsize = bufdata = 0; |
391 | num = 0; |
392 | va_start(al, data); |
393 | while((part = va_arg(al, wchar_t *)) != NULL) |
394 | { |
ccad23d3 |
395 | if(!wcscmp(part, L"%a")) |
d3372da9 |
396 | { |
397 | for(toks = va_arg(al, wchar_t **); *toks != NULL; toks++) |
398 | { |
399 | part = *toks; |
400 | freepart = 0; |
401 | if((tpart = quoteword(part)) != NULL) |
402 | { |
403 | freepart = 1; |
404 | part = tpart; |
405 | } |
406 | addtobuf(buf, L' '); |
407 | bufcat(buf, part, wcslen(part)); |
408 | num++; |
409 | if(freepart) |
410 | free(part); |
411 | } |
412 | } else { |
413 | if(*part == L'%') |
414 | { |
ccad23d3 |
415 | tpart = part + 1; |
416 | if(!wcscmp(tpart, L"i")) |
d3372da9 |
417 | { |
ccad23d3 |
418 | freepart = 1; |
419 | part = swprintf2(L"%i", va_arg(al, int)); |
420 | } else if(!wcscmp(tpart, L"s")) { |
421 | freepart = 1; |
422 | part = icmbstowcs(sarg = va_arg(al, char *), NULL); |
423 | if(part == NULL) |
d3372da9 |
424 | { |
ccad23d3 |
425 | if(buf != NULL) |
426 | free(buf); |
427 | return(-1); |
d3372da9 |
428 | } |
ccad23d3 |
429 | } else if(!wcscmp(tpart, L"ls")) { |
430 | part = va_arg(al, wchar_t *); |
431 | } else if(!wcscmp(tpart, L"ll")) { |
432 | freepart = 1; |
433 | part = swprintf2(L"%lli", va_arg(al, long long)); |
434 | } else if(!wcscmp(tpart, L"f")) { |
435 | freepart = 1; |
436 | part = swprintf2(L"%f", va_arg(al, double)); |
437 | } else if(!wcscmp(tpart, L"x")) { |
438 | freepart = 1; |
439 | part = swprintf2(L"%x", va_arg(al, int)); |
440 | } else { |
441 | if(buf != NULL) |
442 | free(buf); |
443 | return(-1); |
d3372da9 |
444 | } |
d3372da9 |
445 | } else { |
446 | freepart = 0; |
447 | } |
448 | if((tpart = quoteword(part)) != NULL) |
449 | { |
450 | if(freepart) |
451 | free(part); |
452 | part = tpart; |
453 | freepart = 1; |
454 | } |
455 | if(num > 0) |
456 | addtobuf(buf, L' '); |
457 | if(num == 0) |
458 | { |
459 | if((qcmd = makeqcmd(part)) == NULL) |
460 | { |
461 | if(freepart) |
462 | free(part); |
463 | if(buf != NULL) |
464 | free(buf); |
465 | return(-1); |
466 | } else { |
467 | qcmd->callback = callback; |
468 | qcmd->data = data; |
469 | } |
470 | } |
471 | bufcat(buf, part, wcslen(part)); |
472 | num++; |
473 | if(freepart) |
474 | free(part); |
475 | } |
476 | } |
477 | bufcat(buf, L"\r\n\0", 3); |
478 | if((final = icwcstombs(buf, "utf-8")) == NULL) |
479 | { |
480 | free(buf); |
481 | return(-1); |
482 | } |
483 | va_end(al); |
484 | free(buf); |
485 | qcmd->buf = final; |
486 | qcmd->buflen = strlen(final); |
487 | return(qcmd->tag); |
488 | } |
489 | |
490 | int dc_handleread(void) |
491 | { |
492 | int ret, done; |
493 | char *p1, *p2; |
494 | size_t len; |
26d72b0d |
495 | socklen_t optlen; |
d3372da9 |
496 | int errnobak; |
497 | /* Ewww... this really is soo ugly. I need to clean this up some day. */ |
498 | static int pstate = 0; |
499 | static char inbuf[128]; |
500 | static size_t inbufdata = 0; |
501 | static wchar_t *cbuf = NULL; |
502 | static size_t cbufsize = 0, cbufdata = 0; |
503 | static wchar_t *pptr = NULL; |
504 | static wchar_t **argv = NULL; |
26d72b0d |
505 | static int argc = 0; |
506 | static size_t args = 0; |
d3372da9 |
507 | static wchar_t *cw = NULL; |
508 | static size_t cwsize = 0, cwdata = 0; |
509 | static struct dc_response *curresp = NULL; |
510 | static int cont = 0; |
511 | static int unlink = 0; |
512 | |
513 | switch(state) |
514 | { |
515 | case -1: |
516 | return(-1); |
517 | case 0: |
26d72b0d |
518 | optlen = sizeof(ret); |
519 | getsockopt(fd, SOL_SOCKET, SO_ERROR, &ret, &optlen); |
d3372da9 |
520 | if(ret) |
521 | { |
522 | int newfd; |
12383d48 |
523 | |
d3372da9 |
524 | for(curhost = curhost->ai_next; curhost != NULL; curhost = curhost->ai_next) |
525 | { |
526 | if((newfd = socket(curhost->ai_family, curhost->ai_socktype, curhost->ai_protocol)) < 0) |
527 | { |
528 | errnobak = errno; |
529 | dc_disconnect(); |
530 | errno = errnobak; |
531 | return(-1); |
532 | } |
533 | dup2(newfd, fd); |
534 | close(newfd); |
535 | fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_NONBLOCK); |
12383d48 |
536 | if(connect(fd, (struct sockaddr *)curhost->ai_addr, curhost->ai_addrlen)) |
d3372da9 |
537 | { |
538 | if(errno == EINPROGRESS) |
539 | return(0); |
540 | } else { |
541 | break; |
542 | } |
543 | } |
544 | if(curhost == NULL) |
545 | { |
546 | dc_disconnect(); |
547 | errno = ret; |
548 | return(-1); |
549 | } |
550 | } |
12383d48 |
551 | if(curhost->ai_canonname != NULL) |
9e5f2b29 |
552 | servinfo.hostname = sstrdup(curhost->ai_canonname); |
553 | servinfo.family = curhost->ai_family; |
d3372da9 |
554 | state = 1; |
555 | resetreader = 1; |
556 | break; |
557 | case 1: |
558 | if(resetreader) |
559 | { |
560 | inbufdata = 0; |
561 | cbufdata = 0; |
562 | pptr = NULL; |
563 | pstate = 0; |
564 | resetreader = 0; |
565 | cont = 0; |
566 | if(curresp != NULL) |
567 | dc_freeresp(curresp); |
568 | curresp = NULL; |
569 | } |
570 | if(inbufdata == 128) |
571 | inbufdata = 0; |
572 | ret = read(fd, inbuf + inbufdata, 128 - inbufdata); |
573 | if(ret < 0) |
574 | { |
575 | if((errno == EAGAIN) || (errno == EINTR)) |
576 | return(0); |
577 | errnobak = errno; |
578 | dc_disconnect(); |
579 | errno = errnobak; |
580 | return(-1); |
581 | } else if(ret == 0) { |
582 | dc_disconnect(); |
583 | errno = 0; |
584 | return(-1); |
585 | } |
586 | inbufdata += ret; |
587 | done = 0; |
588 | while(!done) |
589 | { |
590 | if(cbufsize == cbufdata) |
591 | { |
592 | if(pptr != NULL) |
593 | len = pptr - cbuf; |
594 | if((cbuf = realloc(cbuf, sizeof(wchar_t) * (cbufsize += 256))) == NULL) |
595 | { |
596 | dc_disconnect(); |
597 | errno = ENOMEM; |
598 | return(-1); |
599 | } |
600 | if(pptr != NULL) |
601 | pptr = cbuf + len; |
602 | } |
603 | p1 = inbuf; |
604 | p2 = (char *)(cbuf + cbufdata); |
605 | len = sizeof(wchar_t) * (cbufsize - cbufdata); |
606 | ret = iconv(ichandle, &p1, &inbufdata, &p2, &len); |
607 | memmove(inbuf, p1, inbufdata); |
608 | cbufdata = cbufsize - (len / sizeof(wchar_t)); |
609 | if(ret < 0) |
610 | { |
611 | switch(errno) |
612 | { |
613 | case EILSEQ: |
614 | /* XXX Is this really OK? */ |
615 | inbufdata = 0; |
616 | done = 1; |
617 | break; |
618 | case EINVAL: |
619 | done = 1; |
620 | break; |
621 | case E2BIG: |
622 | break; |
623 | default: |
624 | errnobak = errno; |
625 | dc_disconnect(); |
626 | errno = errnobak; |
627 | return(-1); |
628 | } |
629 | } else { |
630 | done = 1; |
631 | } |
632 | } |
633 | if(pptr == NULL) |
634 | pptr = cbuf; |
635 | done = 0; |
636 | while(!done && (pptr - cbuf < cbufdata)) |
637 | { |
638 | switch(pstate) |
639 | { |
640 | case 0: |
641 | if(iswspace(*pptr)) |
642 | { |
643 | if(*pptr == L'\r') |
644 | { |
645 | if(pptr == cbuf + cbufdata - 1) |
646 | { |
647 | done = 1; |
648 | break; |
649 | } |
650 | if(*(++pptr) == L'\n') |
651 | { |
652 | if(curresp == NULL) |
653 | { |
654 | curresp = makeresp(); |
655 | if((argc > 0) && ((curresp->code = wcstol(argv[0], NULL, 10)) >= 600)) |
656 | { |
657 | curresp->cmdname = L".notify"; |
658 | curresp->internal = commands->next; |
659 | curresp->tag = -1; |
660 | unlink = 0; |
661 | } else { |
662 | if((curresp->cmdname = queue->cmd->name) == NULL) |
663 | curresp->cmdname = L".connect"; |
664 | curresp->data = queue->data; |
665 | curresp->tag = queue->tag; |
666 | curresp->internal = (void *)(queue->cmd); |
667 | unlink = 1; |
668 | } |
669 | } |
670 | sizebuf(&curresp->rlines, &curresp->linessize, curresp->numlines + 1, sizeof(*(curresp->rlines)), 1); |
671 | curresp->rlines[curresp->numlines].argc = argc; |
672 | curresp->rlines[curresp->numlines].argv = argv; |
673 | argv = NULL; |
674 | argc = args = 0; |
675 | curresp->numlines++; |
676 | if(!cont) |
677 | { |
678 | if((curresp->code >= 600) || (queue == NULL) || (queue->callback == NULL)) |
679 | ret = 0; |
680 | else |
681 | ret = queue->callback(curresp); |
682 | if(ret == 0) |
683 | { |
684 | if(respqueue == NULL) |
685 | { |
686 | respqueue = respqueueend = curresp; |
687 | } else { |
688 | curresp->next = NULL; |
689 | curresp->prev = respqueueend; |
690 | respqueueend->next = curresp; |
691 | respqueueend = curresp; |
692 | } |
693 | } else if(ret == 1) { |
694 | dc_freeresp(curresp); |
695 | } |
696 | curresp = NULL; |
697 | if(unlink) |
698 | unlinkqueue(); |
699 | } |
700 | wmemmove(cbuf, pptr, cbufdata -= (pptr - cbuf)); |
701 | pptr = cbuf; |
702 | } else { |
703 | pptr++; |
704 | } |
705 | } else { |
706 | pptr++; |
707 | } |
708 | } else { |
709 | pstate = 1; |
710 | cwdata = 0; |
711 | } |
712 | break; |
713 | case 1: |
714 | if(iswspace(*pptr) || ((argc == 0) && (*pptr == L'-'))) |
715 | { |
716 | if(argc == 0) |
717 | { |
718 | if(*pptr == L'-') |
719 | { |
720 | cont = 1; |
721 | pptr++; |
722 | } else { |
723 | cont = 0; |
724 | } |
725 | } |
726 | addtobuf(cw, L'\0'); |
727 | sizebuf(&argv, &args, argc + 1, sizeof(*argv), 1); |
728 | argv[argc++] = cw; |
729 | cw = NULL; |
730 | cwsize = cwdata = 0; |
731 | pstate = 0; |
732 | } else if(*pptr == L'\"') { |
733 | pstate = 2; |
734 | pptr++; |
735 | } else if(*pptr == L'\\') { |
736 | if(pptr == cbuf + cbufdata - 1) |
737 | { |
738 | done = 1; |
739 | break; |
740 | } |
741 | addtobuf(cw, *(++pptr)); |
742 | pptr++; |
743 | } else { |
744 | addtobuf(cw, *(pptr++)); |
745 | } |
746 | break; |
747 | case 2: |
748 | if(*pptr == L'\"') |
749 | { |
750 | pstate = 1; |
751 | } else if(*pptr == L'\\') { |
752 | addtobuf(cw, *(++pptr)); |
753 | } else { |
754 | addtobuf(cw, *pptr); |
755 | } |
756 | pptr++; |
757 | break; |
758 | } |
759 | } |
760 | break; |
761 | } |
762 | return(0); |
763 | } |
764 | |
a8c5ada6 |
765 | #if UNIX_AUTH_STYLE == 1 |
9e5f2b29 |
766 | static void mkcreds(struct msghdr *msg) |
767 | { |
768 | struct ucred *ucred; |
769 | static char buf[CMSG_SPACE(sizeof(*ucred))]; |
770 | struct cmsghdr *cmsg; |
771 | |
772 | msg->msg_control = buf; |
773 | msg->msg_controllen = sizeof(buf); |
774 | cmsg = CMSG_FIRSTHDR(msg); |
775 | cmsg->cmsg_level = SOL_SOCKET; |
776 | cmsg->cmsg_type = SCM_CREDENTIALS; |
777 | cmsg->cmsg_len = CMSG_LEN(sizeof(*ucred)); |
778 | ucred = (struct ucred *)CMSG_DATA(cmsg); |
779 | ucred->pid = getpid(); |
780 | ucred->uid = getuid(); |
781 | ucred->gid = getgid(); |
782 | msg->msg_controllen = cmsg->cmsg_len; |
783 | } |
a8c5ada6 |
784 | #endif |
9e5f2b29 |
785 | |
d3372da9 |
786 | int dc_handlewrite(void) |
787 | { |
788 | int ret; |
789 | int errnobak; |
9e5f2b29 |
790 | struct msghdr msg; |
791 | struct iovec bufvec; |
d3372da9 |
792 | |
793 | switch(state) |
794 | { |
795 | case 1: |
796 | if(queue->buflen > 0) |
797 | { |
9e5f2b29 |
798 | memset(&msg, 0, sizeof(msg)); |
799 | msg.msg_iov = &bufvec; |
800 | msg.msg_iovlen = 1; |
801 | bufvec.iov_base = queue->buf; |
802 | bufvec.iov_len = queue->buflen; |
a8c5ada6 |
803 | #if UNIX_AUTH_STYLE == 1 |
9e5f2b29 |
804 | if((servinfo.family == PF_UNIX) && !servinfo.sentcreds) |
805 | { |
806 | mkcreds(&msg); |
807 | servinfo.sentcreds = 1; |
808 | } |
a8c5ada6 |
809 | #endif |
9e5f2b29 |
810 | ret = sendmsg(fd, &msg, MSG_NOSIGNAL | MSG_DONTWAIT); |
d3372da9 |
811 | if(ret < 0) |
812 | { |
813 | if((errno == EAGAIN) || (errno == EINTR)) |
814 | return(0); |
815 | errnobak = errno; |
816 | dc_disconnect(); |
817 | errno = errnobak; |
818 | return(-1); |
819 | } |
820 | if(ret > 0) |
821 | memmove(queue->buf, queue->buf + ret, queue->buflen -= ret); |
822 | } |
823 | break; |
824 | } |
825 | return(0); |
826 | } |
827 | |
828 | #ifdef HAVE_RESOLVER |
0c58c2a0 |
829 | /* |
830 | * It kind of sucks that libresolv doesn't have any DNS parsing |
831 | * routines. We'll have to do it manually. |
832 | */ |
d3372da9 |
833 | static char *readname(unsigned char *msg, unsigned char *eom, unsigned char **p) |
834 | { |
835 | char *name, *tname; |
836 | unsigned char *tp; |
837 | size_t namesize, namedata, len; |
838 | |
839 | name = NULL; |
840 | namesize = namedata = 0; |
841 | while(1) |
842 | { |
843 | len = *((*p)++); |
844 | if(len == 0) |
845 | { |
846 | addtobuf(name, 0); |
847 | return(name); |
848 | } else if(len == 0xc0) { |
849 | tp = msg + *((*p)++); |
850 | if((tname = readname(msg, eom, &tp)) == NULL) |
851 | { |
852 | if(name != NULL) |
853 | free(name); |
854 | return(NULL); |
855 | } |
856 | bufcat(name, tname, strlen(tname)); |
857 | addtobuf(name, 0); |
858 | free(tname); |
859 | return(name); |
860 | } else if(*p + len >= eom) { |
861 | if(name != NULL) |
862 | free(name); |
863 | return(NULL); |
864 | } |
865 | bufcat(name, *p, len); |
866 | *p += len; |
867 | addtobuf(name, '.'); |
868 | } |
869 | } |
870 | |
871 | static int skipname(unsigned char *msg, unsigned char *eom, unsigned char **p) |
872 | { |
873 | size_t len; |
874 | |
875 | while(1) |
876 | { |
877 | len = *((*p)++); |
878 | if(len == 0) |
879 | { |
880 | return(0); |
881 | } else if(len == 0xc0) { |
882 | (*p)++; |
883 | return(0); |
884 | } else if(*p + len >= eom) { |
885 | return(-1); |
886 | } |
887 | *p += len; |
888 | } |
889 | } |
890 | |
891 | static int getsrvrr(char *name, char **host, int *port) |
892 | { |
893 | int i; |
894 | char *name2, *rrname; |
895 | unsigned char *eom, *p; |
896 | unsigned char buf[1024]; |
897 | int flags, num, class, type; |
898 | size_t len; |
899 | int ret; |
900 | |
901 | if(!(_res.options & RES_INIT)) |
902 | { |
903 | if(res_init() < 0) |
904 | return(-1); |
905 | } |
906 | /* res_querydomain doesn't work for some reason */ |
4d487bad |
907 | if(name[strlen(name) - 1] == '.') |
908 | name2 = sprintf2("%s.%s", DOLCON_SRV_NAME, name); |
909 | else |
910 | name2 = sprintf2("%s.%s.", DOLCON_SRV_NAME, name); |
d3372da9 |
911 | ret = res_query(name2, C_IN, T_SRV, buf, sizeof(buf)); |
912 | if(ret < 0) |
913 | { |
914 | free(name2); |
915 | return(-1); |
916 | } |
917 | eom = buf + ret; |
0c58c2a0 |
918 | /* |
919 | * Assume transaction ID is correct. |
920 | * |
921 | * Flags check: FA0F masks in request/response flag, opcode, |
922 | * truncated flag and status code, and ignores authoritativeness, |
923 | * recursion flags and DNSSEC and reserved bits. |
924 | */ |
d3372da9 |
925 | flags = (buf[2] << 8) + buf[3]; |
926 | if((flags & 0xfa0f) != 0x8000) |
927 | { |
928 | free(name2); |
929 | return(-1); |
930 | } |
0c58c2a0 |
931 | /* Skip the query entries */ |
d3372da9 |
932 | num = (buf[4] << 8) + buf[5]; |
933 | p = buf + 12; |
934 | for(i = 0; i < num; i++) |
935 | { |
936 | if(skipname(buf, eom, &p)) |
937 | { |
938 | free(name2); |
939 | return(-1); |
940 | } |
0c58c2a0 |
941 | p += 4; /* Type and class */ |
d3372da9 |
942 | } |
0c58c2a0 |
943 | /* Parse answers */ |
d3372da9 |
944 | num = (buf[6] << 8) + buf[7]; |
945 | for(i = 0; i < num; i++) |
946 | { |
947 | if((rrname = readname(buf, eom, &p)) == NULL) |
948 | { |
949 | free(name2); |
950 | return(-1); |
951 | } |
952 | type = *(p++) << 8; |
953 | type += *(p++); |
954 | class = *(p++) << 8; |
955 | class += *(p++); |
0c58c2a0 |
956 | p += 4; /* TTL */ |
d3372da9 |
957 | len = *(p++) << 8; |
958 | len += *(p++); |
959 | if((class == C_IN) && (type == T_SRV) && !strcmp(rrname, name2)) |
960 | { |
961 | free(rrname); |
962 | free(name2); |
963 | /* Noone will want to have alternative DC servers, so |
964 | * don't care about priority and weigth */ |
965 | p += 4; |
966 | if(port == NULL) |
967 | { |
968 | p += 2; |
969 | } else { |
970 | *port = *(p++) << 8; |
971 | *port += *(p++); |
972 | } |
973 | if(host != NULL) |
974 | { |
975 | if((rrname = readname(buf, eom, &p)) == NULL) |
976 | return(-1); |
977 | *host = rrname; |
978 | } |
979 | return(0); |
980 | } |
981 | p += len; |
982 | free(rrname); |
983 | } |
984 | free(name2); |
985 | return(-1); |
986 | } |
987 | #else |
988 | static int getsrvrr(char *name, char **host, int *port) |
989 | { |
c4c34936 |
990 | errno = EOPNOTSUPP; |
d3372da9 |
991 | return(-1); |
992 | } |
993 | #endif |
994 | |
12383d48 |
995 | static struct addrinfo *gaicat(struct addrinfo *l1, struct addrinfo *l2) |
d3372da9 |
996 | { |
12383d48 |
997 | struct addrinfo *p; |
998 | |
999 | if(l1 == NULL) |
1000 | return(l2); |
1001 | for(p = l1; p->ai_next != NULL; p = p->ai_next); |
1002 | p->ai_next = l2; |
1003 | return(l1); |
1004 | } |
1005 | |
1006 | /* This isn't actually correct, in any sense of the word. It only |
1007 | * works on systems whose getaddrinfo implementation saves the |
1008 | * sockaddr in the same malloc block as the struct addrinfo. Those |
1009 | * systems include at least FreeBSD and glibc-based systems, though, |
1010 | * so it should not be any immediate threat, and it allows me to not |
1011 | * implement a getaddrinfo wrapper. It can always be changed, should |
1012 | * the need arise. */ |
1013 | static struct addrinfo *unixgai(int type, char *path) |
1014 | { |
1015 | void *buf; |
1016 | struct addrinfo *ai; |
1017 | struct sockaddr_un *un; |
1018 | |
1019 | buf = smalloc(sizeof(*ai) + sizeof(*un)); |
1020 | memset(buf, 0, sizeof(*ai) + sizeof(*un)); |
1021 | ai = (struct addrinfo *)buf; |
1022 | un = (struct sockaddr_un *)(buf + sizeof(*ai)); |
1023 | ai->ai_flags = 0; |
1024 | ai->ai_family = AF_UNIX; |
1025 | ai->ai_socktype = type; |
1026 | ai->ai_protocol = 0; |
1027 | ai->ai_addrlen = sizeof(*un); |
1028 | ai->ai_addr = (struct sockaddr *)un; |
1029 | ai->ai_canonname = NULL; |
1030 | ai->ai_next = NULL; |
1031 | un->sun_family = PF_UNIX; |
1032 | strncpy(un->sun_path, path, sizeof(un->sun_path) - 1); |
1033 | return(ai); |
1034 | } |
1035 | |
1036 | static struct addrinfo *resolvtcp(char *name, int port) |
1037 | { |
1038 | struct addrinfo hint, *ret; |
1039 | char tmp[32]; |
d3372da9 |
1040 | |
d3372da9 |
1041 | memset(&hint, 0, sizeof(hint)); |
1042 | hint.ai_socktype = SOCK_STREAM; |
12383d48 |
1043 | hint.ai_flags = AI_NUMERICSERV | AI_CANONNAME; |
1044 | snprintf(tmp, sizeof(tmp), "%i", port); |
1045 | if(!getaddrinfo(name, tmp, &hint, &ret)) |
1046 | return(ret); |
1047 | return(NULL); |
1048 | } |
1049 | |
1050 | static struct addrinfo *resolvsrv(char *name) |
1051 | { |
1052 | struct addrinfo *ret; |
1053 | char *realname; |
1054 | int port; |
1055 | |
1056 | if(getsrvrr(name, &realname, &port)) |
1057 | return(NULL); |
1058 | ret = resolvtcp(realname, port); |
1059 | free(realname); |
1060 | return(ret); |
1061 | } |
1062 | |
1063 | static struct addrinfo *resolvhost(char *host) |
1064 | { |
1065 | char *p, *hp; |
1066 | struct addrinfo *ret; |
1067 | int port; |
1068 | |
1069 | if(strchr(host, '/')) |
1070 | return(unixgai(SOCK_STREAM, host)); |
1071 | if((strchr(host, ':') == NULL) && ((ret = resolvsrv(host)) != NULL)) |
1072 | return(ret); |
1073 | ret = NULL; |
1074 | if((*host == '[') && ((p = strchr(host, ']')) != NULL)) |
d3372da9 |
1075 | { |
12383d48 |
1076 | hp = memcpy(smalloc(p - host), host + 1, (p - host) - 1); |
1077 | hp[(p - host) - 1] = 0; |
1078 | if(strchr(hp, ':') != NULL) { |
1079 | port = 0; |
1080 | if(*(++p) == ':') |
1081 | port = atoi(p + 1); |
1082 | if(port == 0) |
1083 | port = 1500; |
1084 | ret = resolvtcp(hp, port); |
d3372da9 |
1085 | } |
12383d48 |
1086 | free(hp); |
1087 | } |
1088 | if(ret != NULL) |
1089 | return(ret); |
1090 | hp = sstrdup(host); |
1091 | port = 0; |
1092 | if((p = strrchr(hp, ':')) != NULL) { |
1093 | *(p++) = 0; |
1094 | port = atoi(p); |
1095 | } |
1096 | if(port == 0) |
1097 | port = 1500; |
1098 | ret = resolvtcp(hp, port); |
1099 | free(hp); |
1100 | if(ret != NULL) |
1101 | return(ret); |
1102 | return(NULL); |
1103 | } |
1104 | |
8affe2ff |
1105 | static struct addrinfo *getlocalai(void) |
12383d48 |
1106 | { |
1107 | struct addrinfo *ret; |
1108 | struct passwd *pwd; |
1109 | char *tmp; |
8affe2ff |
1110 | |
12383d48 |
1111 | ret = NULL; |
1112 | if((getuid() != 0) && ((pwd = getpwuid(getuid())) != NULL)) |
1113 | { |
1114 | tmp = sprintf2("/tmp/doldacond-%s", pwd->pw_name); |
8affe2ff |
1115 | ret = unixgai(SOCK_STREAM, tmp); |
12383d48 |
1116 | free(tmp); |
d3372da9 |
1117 | } |
12383d48 |
1118 | ret = gaicat(ret, unixgai(SOCK_STREAM, "/var/run/doldacond.sock")); |
8affe2ff |
1119 | return(ret); |
1120 | } |
1121 | |
1122 | static struct addrinfo *defaulthost(void) |
1123 | { |
1124 | struct addrinfo *ret; |
1125 | char *tmp; |
1126 | char dn[1024]; |
1127 | |
1128 | if(((tmp = getenv("DCSERVER")) != NULL) && *tmp) |
1129 | return(resolvhost(tmp)); |
1130 | ret = getlocalai(); |
12383d48 |
1131 | ret = gaicat(ret, resolvtcp("localhost", 1500)); |
1132 | if(!getdomainname(dn, sizeof(dn)) && *dn && strcmp(dn, "(none)")) |
1133 | ret = gaicat(ret, resolvsrv(dn)); |
1134 | return(ret); |
1135 | } |
1136 | |
e4b88cc0 |
1137 | static int dc_connectai(struct addrinfo *hosts, struct qcmd **cnctcmd) |
12383d48 |
1138 | { |
1139 | struct qcmd *qcmd; |
1140 | int errnobak; |
1141 | |
1142 | if(fd >= 0) |
1143 | dc_disconnect(); |
1144 | state = -1; |
d3372da9 |
1145 | if(hostlist != NULL) |
1146 | freeaddrinfo(hostlist); |
8affe2ff |
1147 | hostlist = hosts; |
d3372da9 |
1148 | for(curhost = hostlist; curhost != NULL; curhost = curhost->ai_next) |
1149 | { |
1150 | if((fd = socket(curhost->ai_family, curhost->ai_socktype, curhost->ai_protocol)) < 0) |
1151 | { |
1152 | errnobak = errno; |
e4b88cc0 |
1153 | freeaddrinfo(hostlist); |
1154 | hostlist = NULL; |
d3372da9 |
1155 | errno = errnobak; |
1156 | return(-1); |
1157 | } |
1158 | fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_NONBLOCK); |
12383d48 |
1159 | if(connect(fd, (struct sockaddr *)curhost->ai_addr, curhost->ai_addrlen)) |
d3372da9 |
1160 | { |
1161 | if(errno == EINPROGRESS) |
1162 | { |
1163 | state = 0; |
1164 | break; |
1165 | } |
1166 | close(fd); |
1167 | fd = -1; |
1168 | } else { |
12383d48 |
1169 | if(curhost->ai_canonname != NULL) |
9e5f2b29 |
1170 | servinfo.hostname = sstrdup(curhost->ai_canonname); |
1171 | servinfo.family = curhost->ai_family; |
d3372da9 |
1172 | state = 1; |
1173 | break; |
1174 | } |
1175 | } |
e4b88cc0 |
1176 | if(state != -1) |
1177 | { |
1178 | qcmd = makeqcmd(NULL); |
1179 | if(cnctcmd != NULL) |
1180 | *cnctcmd = qcmd; |
1181 | resetreader = 1; |
1182 | } else { |
1183 | free(hostlist); |
1184 | hostlist = NULL; |
1185 | } |
d3372da9 |
1186 | return(fd); |
1187 | } |
1188 | |
e4b88cc0 |
1189 | static int dc_connect2(char *host, struct qcmd **cnctcmd) |
8affe2ff |
1190 | { |
1191 | struct addrinfo *ai; |
e4b88cc0 |
1192 | struct qcmd *qcmd; |
8affe2ff |
1193 | int ret; |
1194 | |
e4b88cc0 |
1195 | if(host == dc_srv_local) |
1196 | ai = getlocalai(); |
1197 | else if(!host || !*host) |
8affe2ff |
1198 | ai = defaulthost(); |
1199 | else |
1200 | ai = resolvhost(host); |
1201 | if(ai == NULL) |
1202 | return(-1); |
e4b88cc0 |
1203 | ret = dc_connectai(ai, &qcmd); |
1204 | if((ret >= 0) && (cnctcmd != NULL)) |
1205 | *cnctcmd = qcmd; |
8affe2ff |
1206 | return(ret); |
1207 | } |
1208 | |
e4b88cc0 |
1209 | int dc_connect(char *host) |
1210 | { |
1211 | return(dc_connect2(host, NULL)); |
1212 | } |
1213 | |
1214 | int dc_connectsync(char *host, struct dc_response **respbuf) |
8affe2ff |
1215 | { |
8affe2ff |
1216 | int ret; |
e4b88cc0 |
1217 | struct qcmd *cc; |
1218 | struct dc_response *resp; |
8affe2ff |
1219 | |
e4b88cc0 |
1220 | if((ret = dc_connect2(host, &cc)) < 0) |
1221 | return(-1); |
1222 | resp = dc_gettaggedrespsync(cc->tag); |
1223 | if(resp == NULL) { |
1224 | dc_disconnect(); |
1225 | return(-1); |
1226 | } |
1227 | if(respbuf == NULL) |
1228 | dc_freeresp(resp); |
1229 | else |
1230 | *respbuf = resp; |
1231 | return(ret); |
1232 | } |
1233 | |
1234 | int dc_connectsync2(char *host, int rev) |
1235 | { |
1236 | int ret; |
1237 | struct dc_response *resp; |
1238 | |
1239 | if((ret = dc_connectsync(host, &resp)) < 0) |
1240 | return(-1); |
1241 | if(dc_checkprotocol(resp, rev)) |
1242 | { |
1243 | dc_freeresp(resp); |
1244 | dc_disconnect(); |
a24f31ec |
1245 | errno = EPROTONOSUPPORT; |
e4b88cc0 |
1246 | return(-1); |
1247 | } |
1248 | dc_freeresp(resp); |
8affe2ff |
1249 | return(ret); |
1250 | } |
1251 | |
d3372da9 |
1252 | struct dc_intresp *dc_interpret(struct dc_response *resp) |
1253 | { |
1254 | int i; |
1255 | struct dc_intresp *iresp; |
1256 | struct command *cmd; |
1257 | struct respclass *cls; |
1258 | int code; |
26d72b0d |
1259 | size_t args; |
d3372da9 |
1260 | |
1261 | if((resp->numlines == 0) || (resp->rlines[0].argc == 0) || (resp->curline >= resp->numlines)) |
1262 | return(NULL); |
1263 | code = wcstol(resp->rlines[0].argv[0], NULL, 10); |
1264 | cmd = (struct command *)(resp->internal); |
1265 | for(cls = cmd->classes; cls != NULL; cls = cls->next) |
1266 | { |
1267 | if(cls->code == code) |
1268 | break; |
1269 | } |
1270 | if(cls == NULL) |
1271 | return(NULL); |
1272 | if(cls->nwords >= resp->rlines[resp->curline].argc) |
1273 | return(NULL); |
1274 | iresp = smalloc(sizeof(*iresp)); |
1275 | iresp->code = code; |
1276 | iresp->argv = NULL; |
1277 | iresp->argc = 0; |
1278 | args = 0; |
1279 | for(i = 0; i < cls->nwords; i++) |
1280 | { |
1281 | switch(cls->wordt[i]) |
1282 | { |
1283 | case RESP_DSC: |
1284 | break; |
1285 | case RESP_STR: |
1286 | sizebuf(&(iresp->argv), &args, iresp->argc + 1, sizeof(*(iresp->argv)), 1); |
1287 | iresp->argv[iresp->argc].val.str = swcsdup(resp->rlines[resp->curline].argv[i + 1]); |
1288 | iresp->argv[iresp->argc].type = cls->wordt[i]; |
1289 | iresp->argc++; |
1290 | break; |
1291 | case RESP_INT: |
1292 | sizebuf(&(iresp->argv), &args, iresp->argc + 1, sizeof(*(iresp->argv)), 1); |
1293 | iresp->argv[iresp->argc].val.num = wcstol(resp->rlines[resp->curline].argv[i + 1], NULL, 0); |
1294 | iresp->argv[iresp->argc].type = cls->wordt[i]; |
1295 | iresp->argc++; |
1296 | break; |
1297 | case RESP_FLOAT: |
1298 | sizebuf(&(iresp->argv), &args, iresp->argc + 1, sizeof(*(iresp->argv)), 1); |
1299 | iresp->argv[iresp->argc].val.flnum = wcstod(resp->rlines[resp->curline].argv[i + 1], NULL); |
1300 | iresp->argv[iresp->argc].type = cls->wordt[i]; |
1301 | iresp->argc++; |
1302 | break; |
1303 | } |
1304 | } |
1305 | resp->curline++; |
1306 | return(iresp); |
1307 | } |
1308 | |
1309 | void dc_freeires(struct dc_intresp *ires) |
1310 | { |
1311 | int i; |
1312 | |
1313 | for(i = 0; i < ires->argc; i++) |
1314 | { |
1315 | if(ires->argv[i].type == RESP_STR) |
1316 | free(ires->argv[i].val.str); |
1317 | } |
1318 | free(ires->argv); |
1319 | free(ires); |
1320 | } |
1321 | |
9a0ef8e1 |
1322 | int dc_checkprotocol(struct dc_response *resp, int revision) |
1323 | { |
1324 | struct dc_intresp *ires; |
1325 | int low, high; |
1326 | |
1327 | if(resp->code != 201) |
1328 | return(-1); |
1329 | resp->curline = 0; |
1330 | if((ires = dc_interpret(resp)) == NULL) |
1331 | return(-1); |
1332 | low = ires->argv[0].val.num; |
e4b88cc0 |
1333 | high = ires->argv[1].val.num; |
9a0ef8e1 |
1334 | dc_freeires(ires); |
1335 | if((revision < low) || (revision > high)) |
1336 | return(-1); |
1337 | return(0); |
1338 | } |
1339 | |
d3372da9 |
1340 | const char *dc_gethostname(void) |
1341 | { |
9e5f2b29 |
1342 | return(servinfo.hostname); |
d3372da9 |
1343 | } |
e4b88cc0 |
1344 | |
1345 | int dc_getfd(void) |
1346 | { |
1347 | return(fd); |
1348 | } |